Phylum Proteobacteria, Class Gammaproteobacteria, Order Vibrionales, Family Vibrionaceae, Genus Photobacterium,
Photobacterium indicum (Johnson and Weisrock 1969) Xie and Yokota 2004.
Historical synonyms: Hyphomicrobium indicum Johnson and Weisrock 1969,
Hyphomicrobium indium Weisrock and Johnson 1966.
Gram-negative, pleomorphic cells, rod or coccus-shaped, 0.7-1.0 x 2.0-6.0 μm, motile
by means of a polar, monotrichous flagellum.
Colonies are thin, white or cream-coloured but later become yellow; colonies up to 2
mm in 24 hours. Grow on medium ( peptone, yeast extract, MgSO4. 7H2O, sea water,
distilled water) at 24 ºC. Grow between 4-25 ºC & pH 4.5-9.5.
Isolated from a sample of bottom mud, Indian Ocean, at 400 m depth. Erythromycin, tetracycline, penicillin & pteridine (O/129) resistant.
- C.H. Xie and Akira Yokota, 2004. Transfer of Hyphomicrobium indicum to the genus Photobacterium as Photobacterium indicum
comb. nov. IJSEM 54, 2113-2116.
- Peter Hirsch, 1974. Genus Hyphomicrobium Stutzer and Hartleb 1898. In: R.E.Buchanan & N.E.Gibbons (Co-editors),Bergey’s
Manual of Determinative Bacteriology, Eight Edition, The Williams & Wilkins Company, Baltimore, 148-151.
Positive results for gas and acid production from D-glucose, production of H2S, production of indole, nitrate reduced, maltose
utilization for fermentation, sucrose utilization for fermentation, glucose utilization for fermentation & phenylalanine deaminase.
Negative results: cannot use lactose, arabinose, gelatin, casein or starch for fermentation , urease, catalase, oxidase & lysine
(c) Costin Stoica